With a normal distribution a large size average IQ of 68 translates into roughly 3 or 4 people per 10,000 with an IQ of 98 or above, the average US IQ. Only a little over 2% would be above 85 the US AA average IQ. Here are some chilling numbers.
19-20% would be <=60. People with Down syndrome average 50-60 IQ. <> 41% would have 61-70, <>31% 71-80, <>7% 81-90 and <> 0.5% 91 and up. Maybe 2 or 3 per 100,000 above 102.
With a normal distribution a large size average IQ of 68 translates into roughly 3 or 4 people per 10,000 with an IQ of 98 or above, the average US IQ. Only a little over 2% would be above 85 the US AA average IQ. Here are some chilling numbers.
19-20% would be <=60. People with Down syndrome average 50-60 IQ. <> 41% would have 61-70, <>31% 71-80, <>7% 81-90 and <> 0.5% 91 and up. Maybe 2 or 3 per 100,000 above 102.